Subtract 20/70 from 7/36
7/36 - 20/70 is -23/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
7/36 = 7 × 35/36 × 35 = 245/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
20/70 = 20 × 18/70 × 18 = 360/1260 - Subtract the two like fractions:
245/1260 - 360/1260 = 245 - 360/1260 = -115/1260 - After reducing the fraction, the answer is -23/252
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